240172668 has 96 divisors (see below), whose sum is σ = 663163200. Its totient is φ = 74907648.

The previous prime is 240172663. The next prime is 240172687. The reversal of 240172668 is 866271042.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240172663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471598 + ... + 472106.

It is an arithmetic number, because the mean of its divisors is an integer number (6907950).

Almost surely, 2^240172668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240172668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331581600).

240172668 is an abundant number, since it is smaller than the sum of its proper divisors (422990532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

240172668 is a wasteful number, since it uses less digits than its factorization.

240172668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 240172668 is about 15497.5052185828. The cubic root of 240172668 is about 621.5954986928.

The spelling of 240172668 in words is "two hundred forty million, one hundred seventy-two thousand, six hundred sixty-eight".